class DataNodeBuilderSpec extends Specification {
- Map<String, Map<String, Object>> expectedLeavesByXpathMap = [
+ Map<String, Map<String, Serializable>> expectedLeavesByXpathMap = [
'/test-tree' : [],
'/test-tree/branch[@name=\'Left\']' : [name: 'Left'],
'/test-tree/branch[@name=\'Left\']/nest' : [name: 'Small', birds: ['Sparrow', 'Robin', 'Finch']],